//下载文件相关的自定义插件
import axios from 'axios'
import {Loading, Message} from 'element-ui'
import { saveAs } from 'file-saver'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { blobValidate } from '@/utils';

const baseURL = process.env.VUE_APP_BASE_API
let downloadLoadingInstance;

export default {
  /**
   * 根据文件id下载文件
   * @param fileId
   */
  file(fileId) {
    let url = baseURL + '/file/downloadByFileId?fileId=' + fileId
    downloadLoadingInstance = Loading.service({ text: "正在下载，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: { 'Api-Admin-Token': getToken() }
    }).then((res) => {
      const isBlob = blobValidate(res.data);
      if (isBlob) {
        const blob = new Blob([res.data], { type: 'application/octet-stream' })
        this.saveAs(blob, decodeURIComponent(res.headers['download-filename']))
      } else {
        this.printErrMsg(res.data);
      }
      downloadLoadingInstance.close();
    }).catch((r) => {
      console.error(r)
      Message.error('下载文件出现错误，请联系管理员！')
      downloadLoadingInstance.close();
    })
  },
  /**
   * 根据文件id下载APP文件
   * @param fileId
   */
  app(fileId) {
    let url = baseURL + '/file/downloadAppFile?fileId=' + fileId
    downloadLoadingInstance = Loading.service({ text: "正在下载，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: { 'Api-Admin-Token': getToken() }
    }).then((res) => {
      const isBlob = blobValidate(res.data);
      if (isBlob) {
        const blob = new Blob([res.data], { type: 'application/vnd.android.package-archive' })
        this.saveAs(blob, decodeURIComponent(res.headers['download-filename']))
      } else {
        this.printErrMsg(res.data);
      }
      downloadLoadingInstance.close();
    }).catch((r) => {
      console.error(r)
      Message.error('下载文件出现错误，请联系管理员！')
      downloadLoadingInstance.close();
    })
  },
  /**
   * 文件另存为
   * @param text 文件
   * @param name 文件名
   * @param opts
   */
  saveAs(text, name, opts) {
    saveAs(text, name, opts);
  },
  /**
   * 弹出错误提示
   * @param data
   * @returns {Promise<void>}
   */
  async printErrMsg(data) {
    const resText = await data.text();
    // const rspObj = JSON.parse(resText);
    // const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
    Message.error(resText);
  }
}

